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Flexible linearity profile low noise feedforward amplifiers for improving channel capacity

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)1567 - 1570
Number of pages4
Journal57th IEEE Vehicular Technology Conference, 2003-Spring
StatePublished - Apr 2003
Event57th Vehicular Technology Conference 2003 (VTC 2003-Spring) - Jeju, Korea, Republic of


This paper describes a highly linear low noise amplifier (LNA) exhibiting a flexible linearity profile intended as a way to meet future flexible mobile communications standards. This has the potential of inclusion in ad-hoc software defined radio (SDR) networks where a frequency band and modulation scheme can be chosen based on the characteristics of the frequency spectrum and user requirements. The linearity profile of the LNA is tailored to cancel distortion generated as a function of the received power profile. This improves the receiver's tolerance to unwanted signals present in the frequency band of interest and reduces the requirement of coding and equalization to compensate for receiver limitations whilst increasing the available capacity. The flexible linearity profile is achieved by the use of a feedforward amplifier structure which has the capability of large distortion suppression determined by the gain and phase balances within its two loops. To ensure maximum distortion cancellation in the band, adaptive cancellation is used to maximize the cancellation of harmful distortion

Additional information

Publisher: Institute of Electrical and Electronics Engineers Inc. (IEEE) Name and Venue of Conference: 57th IEEE Vehicular Technology Conference, 2003-Spring, Jeju, Korea Conference Organiser: IEE Rose publication type: Conference contribution Terms of use: Copyright © 2003 IEEE. Reprinted from Proceedings of IEEE 57th Vehicular Technology Conference, 2003. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it Contributor (Other): Institute of Electrical and Electronics Engineers (IEEE)

Research areas

  • amplifiers, ad hoc networks, software radio


57th Vehicular Technology Conference 2003 (VTC 2003-Spring)

Duration1 Apr 2003 → …
CountryKorea, Republic of

Event: Conference

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